| From: | Andrew Gierth <andrew(at)tao11(dot)riddles(dot)org(dot)uk> |
|---|---|
| To: | gmail Vladimir Koković <vladimir(dot)kokovic(at)gmail(dot)com> |
| Cc: | pgsql-bugs(at)lists(dot)postgresql(dot)org |
| Subject: | Re: BUG #15653: pg_detoast_datum_packed problem |
| Date: | 2019-03-08 19:15:43 |
| Message-ID: | 87a7i5b2ok.fsf@news-spur.riddles.org.uk |
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| Lists: | Postg토토 캔SQL : Postg토토 캔SQL 메일 링리스트 : 2019-03-08 이후 PGSQL-BUGS 19:15 |
>>>>> "gmail" == gmail Vladimir Koković <vladimir(dot)kokovic(at)gmail(dot)com> writes:
gmail> VarChar *arg = PG_GETARG_VARCHAR_PP(0);
The _PP there means that this is allowed to return either a packed
(short) varlena or a normal one...
gmail> len = VARSIZE( arg ) - VARHDRSZ;
...but VARSIZE is only allowed on unpacked varlenas, you need to use
VARSIZE_ANY_EXHDR instead (and VARDATA_ANY rather than VARDATA).
--
Andrew (irc:RhodiumToad)
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